A step closer to solving one of the greatest mysteries of the Universe

Modern science cannot explain why the universe is built of matter and not of antimatter – a substance with the same mass but opposite electrical charges. Between matter and antimatter must be a significant difference, so we can explain what we see in the Universe, and recent studies show that this difference can be found in neutrinos.

Neutrinos are the lightest of the known elementary particles with no electric charge and are among the most common particles in the Universe. They practically do not interact with anything. There are three types of neutrinos, each of which has its equivalent (antineutrinos) and varies between different States.

Japanese T2K experiment have provided evidence that neutrinos oscillate between better types (flavors) than between an antineutrino. It can help us understand why the universe arose out of matter and not antimatter. The study results reject the symmetry between neutrinos and antineutrinos with a confidence of 99.7 percent. In particle physics this result gives a key, but still does not give us confidence.

In the case of quarks, there was already a violation of the so-called charging-dimensional symmetry, but this is not enough, so we can explain the observed benefit amount of matter over antimatter in the Universe. A mystery we will solve only when the symmetry breaking is confirmed in the case of neutrinos.

Researchers will continue to collect data and Refine monitoring to better understand the differences between neutrinos and antineutrinos.